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R2900G Underground Mining Loader
Exterior View
Interior View
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R2900G Underground Mining Loader

Engine ModelCat® C15
Engine Power – Tier 3 Engine – ISO 14396:2002401 hp
Engine Power – VR Engine – ISO 14396:2002401 hp
Bore5.4 in
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Learn more about our R2900G Underground Mining Loader

The Cat® R2900G underground loader is designed for high-production, low cost-per-ton loading and tramming in underground mining applications. An operator favorite, it delivers a safe, comfortable ride in a cab equipped with easy-to-use controls and efficiency-boosting features that optimize performance and maximize productivity. Its compact design provides agile performance combined with rugged construction and simplified maintenance to ensure excellent productivity, long life and low operating costs.

Engine Model
® C15" data-metric=""> Cat® C15
Engine Power - Tier 3 Engine - ISO 14396:2002
401hp
Engine Power - VR Engine - ISO 14396:2002
401hp
Bore
5.4in
Stroke
6.8in
Displacement
927.9in³
Note (1)
Power ratings apply at a rated speed of 1,800 rpm when tested under the reference conditions for the specified standard.
Note (2)
All rating conditions are based on ISO/TR14396:2002, inlet air standard conditions with a total barometric pressure of 100 kPa (29.5 in Hg), with a vapor pressure of 1 kPa (0.295 in Hg), and 25° C (77° F). Performance measured using fuel to EPA specificat
Note (3)
No engine derating required up to 591 m (1,938 ft) altitude.
Note (4)
Optional Ventilation Reduction Package available.
Note (5)
Optional Tier 3 engine package emits equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
Nominal Payload Capacity
37920lb
Gross Machine Mass
155095lb
Static Tipping Load - Straight Ahead - Lift Arms Horizontal
88015lb
Static Tipping Load - Full Turn - Lift Arms Horizontal
75109lb
Breakout Force - SAE
60298lb
Bucket Capacity
6.3-8.9 m³ (8.2-11.6 yd³)
Dump Bucket - 1
8.2yd³
Dump Bucket - 2
9.4yd³
Dump Bucket - 3
10.9yd³
Dump Bucket - 4
11.6yd³
Operating Mass*
110692lb
Operating Mass* - Front Axle
50832lb
Operating Mass* - Rear Axle
59860lb
Operating Mass + Rated Payload*
148611lb
Operating Mass + Rated Payload* - Front Axle
110716lb
Operating Mass + Rated Payload* - Rear Axle
37895lb
Note
*Calculated Weight.
Engine Crankcase
9gal (US)
Transmission
16.4gal (US)
Hydraulic Tank
37gal (US)
Cooling System
19.8gal (US)
Front Differential and Final Drives
31.4gal (US)
Rear Differential and Final Drives
33.5gal (US)
Front Differential and Final Drives - With Axle Oil Cooling System
42gal (US)
Rear Differential and Final Drives - With Axle Oil Cooling System
44.1gal (US)
Fuel Tank - Dual
376.4gal (US)
Brakes
ISO 3450, AS2958.1, CAN-CSA424.30-M90
Cab - FOPS
ISO 3449, SAE J231, AS2294.3, EN13627
Cab - ROPS
ISO 3471, SAE J1040, AS2294.2, EN13510
Raise
9.2s
Dump
3.4s
Lower, Empty, Float Down
3.1s
Total Cycle Time
15.7s
Outside Clearance Radius
288.3in
Inner Clearance Radius
133.2in
Axle Oscillation
8°
Articulation Angle
42.5°
Forward - 1
3.4mile/h
Forward - 2
6mile/h
Forward - 3
10.7mile/h
Forward - 4
18.5mile/h
Reverse - 1
4.1mile/h
Reverse - 2
7.3mile/h
Reverse - 3
13mile/h
Reverse - 4
22mile/h
Tire Size
29.5 × 29
Engine shutdown switch
Lighting: Bucket lip
– External, front, rear, stop light, dual halogen
Receptacle Group, auxiliary start
Starter, electric, 24-volt
Starting and charging system
Alarm, reversing
Alternator, 95 amp
Battery disconnect switch, ground level
Batteries, low maintenance
Diagnostic connector
Automatic Brake Application (ABA)
Cab:
– Cab, open, ROPS/FOPS
Caterpillar Electronic Monitoring System (CEMS), dash instrumental panels
Horns, electric
Instrumentation/gauges:
– Speedometer/tachometer
– Fuel level
– Hydraulic oil temperature
– Engine coolant temperature
Operator presence system
Light, warning, residual brake
Mounting, ROPS
Pilot hydraulic implement controls (single joystick)
Seat:
– Seat, suspension, vinyl
Seat belt, retractable
Brakes, full hydraulic enclosed wet multiple-disc (SAFR)
Engine:
– Cat C15 six cylinder diesel
– Air-to-air aftercooler (ATAAC)
Exhaust:
– Exhaust, purifier, muffler
Filter, engine, remote mounted
Fuel adapters:
– Standard fill, dual, rubber coated, double steel braided fuel lines
Fuel priming pump
Park Brake Switch Engagement (choose between):
– Push to Apply
– Pull to Apply
Pre-cleaner, engine air intake
Torque converter, lock-up clutch (LUC)
Transmission:
– Electronic Clutch Pressure Control (ECPC)
– Auto planetary powershift (4F/4R)
– Transmission neutralizer
Brake axle cooling
Cap, radiator, manual release
Catalytic exhaust purifier/muffler
Dump bucket
Bucket lip:
– Lip weldings – full weld edge or tack weld edge and corners
Decals, International Picto Graphics
Fenders, front, rear
Firewall
Guards, engine and transmission
Handholds
Lift arm positioner for return to dig
Radiator grill, swing out
Service oil sample
Valve, drain, transmission oil filter
Valve, hydraulic, standard
Windows:
– Single pane
Tires arrangements: tires must be selected from the Mandatory Attachments section, choose between:
– Tire, 29.5 × R29 VSMS 2 Bridgestone
– Tire, 29.5 × R29 VSDL L5 Bridgestone
Rims (set of four): five piece, tubeless
Battery disconnect switch, in cab
Lighting:
– Cat LED work lights
– Truck loading light
Cab:
– Cab, enclosed, ROPS/FOPS
Camera, color rear facing
Duct, air, flow diverter
Idle timer (enclosed cab)
Instrumentation/gauges:
– Brake pressure
Seat:
– Seat, suspension, tee, vinyl
– Seat, suspension, air, vinyl
– Seat covers, tee, air and standard
Command for Underground*
Vital Information Management System (VIMS) Gen 3
Payload system, Loadrite
Remote Control Interface (excludes transmitter and receiver) – RCT
Note: *Please consult with your Regional Commercial or Technology Representative prior to upgrading your machine to Command for Underground.
Rim identification numbering
Spare rim (tubeless)
Exhaust:
– Particulate filter, Flow Thru
– Particulate filter, Wall Flow
Fuel adapters:
– Standard fill, dual, stainless steel covered, single braided fuel lines
– Fast fill, dual, rubber coated, double steel braided fuel lines
– Fast fill, dual, stainless steel covered, single braided fuel lines
Secondary Steering System
Engine Options:
– Engine, Ventilation Reduction (VR)
– VR engine, Flow Thru Ready
– Engine, Tier 3
Brake Release Arrangements:
– Recovery hook
– Recovery bar
Buckets:
– Various sizes, dump (6.3 m3/8.2 yd3 to 8.9 m3/11.6 yd3)
– Light materials, dump, uninstalled (10.5 m3/13.7 yd3, 11.6 m3/15.2 yd3)
Bucket lip:
– Modular weld-on
– Bolt-on lips
– Durilock™
Ground Engaging Tools:
– Cutting edge, Cat weld-on
– Cutting edge, bolt-on half arrow
– Cutting edge, shrouds, Durilock
– MAWPS – bucket lip protection
– Heel shrouds
– Wear bars
– Liners
– Overflow guard
Faster fill and evacuation systems:
– Engine, Fast Fill
– Radiator, Fast Fill
– Hydraulic, Fast Fill
– Transmission, Fast Fill
Draw bar attachment, bolt-on
Fire Suppression System:
– Foam, water based
Fluids:
– Arctic coolant
– Arctic fuel
Guard, light and window
Handrails
Lubrication System:
– Automatic
– Centralized
Mine Transfer
Reversible steering
Reflective tape
Ride Control System
Service tools:
– Collet jacking bolts
– Recovery bar
Vandalism protection
Windows
– Dual pane
Wear protection bars:
– Cab/ROPS
– Hydraulic tank
– Radiator
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